These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / gpu / drm / amd / amdkfd / cik_event_interrupt.c

diff --git a/kernel/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c b/kernel/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c
new file mode 100644 (file)
index 0000000..211fc48
--- /dev/null
+++ b/kernel/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2014 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "kfd_priv.h"
+#include "kfd_events.h"
+#include "cik_int.h"
+
+static bool cik_event_interrupt_isr(struct kfd_dev *dev,
+                                       const uint32_t *ih_ring_entry)
+{
+       unsigned int pasid;
+       const struct cik_ih_ring_entry *ihre =
+                       (const struct cik_ih_ring_entry *)ih_ring_entry;
+
+       pasid = (ihre->ring_id & 0xffff0000) >> 16;
+
+       /* Do not process in ISR, just request it to be forwarded to WQ. */
+       return (pasid != 0) &&
+               (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
+               ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
+               ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE);
+}
+
+static void cik_event_interrupt_wq(struct kfd_dev *dev,
+                                       const uint32_t *ih_ring_entry)
+{
+       unsigned int pasid;
+       const struct cik_ih_ring_entry *ihre =
+                       (const struct cik_ih_ring_entry *)ih_ring_entry;
+
+       pasid = (ihre->ring_id & 0xffff0000) >> 16;
+
+       if (pasid == 0)
+               return;
+
+       if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
+               kfd_signal_event_interrupt(pasid, 0, 0);
+       else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
+               kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8);
+       else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
+               kfd_signal_hw_exception_event(pasid);
+}
+
+const struct kfd_event_interrupt_class event_interrupt_class_cik = {
+       .interrupt_isr = cik_event_interrupt_isr,
+       .interrupt_wq = cik_event_interrupt_wq,
+};